Muffler for engine-exhaust.



J. C. GEBHARTI MUFFLER FDR ENGINE EXHAUSTS.

(Application filed June 25, 1900.)

Patented jan. 22, [90L i. 1 I i x 17944117 yaw/ ATENT FFICE.

JOHN O. GEBHART, OF NEW ORLEANS, LOUISIANA, ASSIGNOR TO THE GULF MOTOR WORKS, OF SAME PLACE.

MUFFLER FOR ENGlNE EXHAUST.

SPECIFICA TION formingpart of Letters Batent No. 666,622, dated January 22, 1901. Applicution'filed June 25, 1900. Serial No. 21.512. (No model.)

1'0 @ZZ whom it may concern.-

' Beit kn own that 1, JOHN C. GEBHART, acitizen of the United States, residing at New Orleans, in the parish of Orleans and State of Louisiana, have invented new and useful Iinp'rovements in Mufflers for Engine-Exhaust,

of which the following is a specification.

This invention relates to an improved muf- 1 tier for engine exhaust, and has for its object 0 to provide simple, efficient, and comparatively inexpensive means for obviating the noise of an engine-exhaust.

The invention consists in a mufiier comprising a tubular casting-one or more-constructed with tubular exhaust-passages and a baflie or diaphragnn-one or more-to break the current of the exhaust and obviate the usual blowing neise, and having an inlethead and an outlet-head at opposite ends of the device for connection, respectively, with the exhaust-port of an engine and with any suitable final exhaust pipe or passage. The invention also comprises a muflier composed of a plurality of detachably-connected castings, each having tubular exhaust-passages and diaphra'gms-or baffies, said case ings being so constructed and so arranged with relation to each other as to break the- 0 low cylindrical casting, open 'at both ends.

In its interior, at diametrically opposite points, this casting 1 is formed with tubular exhaust-passages2, Figs. 1 and 2, each of which is the full length of said casting. 5 Within the .casting'1 there is a web or diaphragm 3, located between the tubular passages 2, near their outlet ends, a chamber 4, Fig. 1, being left between the tubular exhaustpassages 2 at the inlet end of the casting. There is also a chamber 5', Fig. 1, at the outlet end of the casting beyond the web or diachamber 9, hereinafter referred to.

phragrn 3 and between the outlet ends of the exhaust-passages.

In constructing my improved muffler it is preferable to employ a plurality of the abovedescribed hollow cylindrical castings. These castings are arranged as shown in Fig. 1, each alternate casting being quartered with the adjoining castings at its opposite ends,

.or, in otherwords, every alternate casting is turned on its axis to an angle of ninety degrees with relation to the adjoining castlugs.

The inlet end of the muflier is provided with a head 6, ha vinga central circular inlet opening or port 7. This inlet-head has on its circumference a plurality of lugs .8, provided with suitable bolt-holes, and on its inner face it has an annular flange 9, provided with a shouldered or rabbeted collar 10 for receiving the-inlet end of the first cylindrical casting. This annular flange 9 incloses a circular Each cylindrical casting, as shown, is also provided with. a shouldered or rabbeted collar 11, Fig. 1, to receive the inlet end of the succeeding cylindrical casting comprised in the muftler, except that the shouldered or rabbeted collar 11 of the last casting receives an annular flange 12 on the inner side of an outlet-head 8o 13, Fig. 1. The annular flange 12 incloses a I chamber 12,as shown. This outlet-head 13 is constructed with'a central outlet-opening 14, as shown, and it is also provided on its periphery with a plurality of lugs 15, having bolt-holes therein. The bolt-holes of the lugs 8 on the inlet-head 6 and of the lugs 15 on theoutlet-head 13 are for the reception of bolts or tie-rods 16, Fig. 1. By means of these bolts or tie-rods 16 and nuts 17 screwed on 'the ends thereof the several sections or parts of the muffler are securely held together'without permitting any part to shift out of posi% tion with relation to the others.

The inlet-port7 of the muffler isinternally 5 screw-threaded for connection with the exhaust-port of an engine, and the outlet-port 14. is similarly screw-threaded for connection with a final exhaust-pipe. I

By reference to Fig. 1 it will be observed that a portion of the exhaust entering the mutfler will pass into the chamber 4: of the first cylindrical casting, while other portions will pass into the tubular exhaust-passages 2 of said casting. That portion of the exhaust which enters the chamber 4 will be Obstructed reflected and by the web or baffle 3and willconseq-uently be pass eventually into the exhamlet-passages. Fromthe out-let ends of the exhaust-passages of the. first casting a portion of the exhaust will pass into the chain ber 4 of the second casting and beingrefiected therefrom will pass through the chamber e cylindrical casting having, its interior pro-- '5 into the tubular passages '2 of the second casting,jand so on throughout the muffler: In this way the current of the exhaust is broken, and consequently the explosive noises of an engine-exhaust will be obviated. l

It will benbvious that any number of hollow cylindrical castings 1 having the con-' struction deshribed may be employed in a muffler, according to the requirements of the engine. When the parts are assembled and secured together asshown in Fig. 1 there is an inlet'chamber 9, with which the exhaust passages 2 and reflecting-chamber 4 of the first casting are in communication, and at the other end of the muffler there is an outlet- -chamber 12?, through which the exhaustvided at diametrically opposite points with tubular exhaust-passages. extended the entire length of said casting and parallel therewith and having a Web or diaphragm located transversely between said tubular passages near their exit ends, substantially as described.

2. In a mufiier for engine-exhaust, a plurality of; connected 'hollow, cylindrical castings each provided internally at diametrically opposite points with tubular exhaust-passages extended the entire length of a casting and each having a web or diaphragm located transversely between said tubular passages near their exit ends, each casting being quartered ings at its with relation. to an adjoining casting, substautially as described.

3. In a muffler for engine-exhaust, the combination of a plurality of hollowc ylindrical t castings, eachprovided in. its interior with tubular exhaust-passages and a web or diaphragm between said'passages, an inlet-head having an inletport, an outlet-head provided. With an outlet-port, and means for detachably connecting'the said castings and heads,

\ each casting being quartered with relation to adjoining castings, substantially as described l 4:. In a muflier for engine-exhaust, the combination of a plurality of hollow cylindrical castings, eachhaving its interior provided with tubular exhaust-passages and with a diaphragmlietween said passages,every alternate casting being quartered with relation to adjoining castings, an inlet-hea d having an inlet-port and an inlet-chamber, an outlethead having an outlet-chamber and an out-I let-port, and means the several castings and their heads, substantially as described. a a

5. In a muflier for engine-exhaust, the combination'of a plurality of hollow cylindrical castings, each having a rabbeted collar on one end and'provided in the interior with tubular exhaust-passages and a diaphragm between said passages, every, alternate casting being quartered with relation to the adjoining cast opposite ends, an inlet-head having a shouldered or rabbeted collar to receive the plain end of the first casting and provided on its periphery with perforated lugs, an outlet-head to be engaged with the shouldered or rabbeted collar of the last casting and provided on the periphery with perforated lugs, tie-rods or bolts engagedwith the lugs of said tially as described.

In testimony whereof I have hereunto set my hand in the presence of two subscribing witnesses.

" Witnesses:

WM. M STOCKBRIDGE, Geo. W. REA.

for securely connecting '9 heads, and nuts on said tie-rods, substam' JOHlfiLO. GEBHART. 

